qt5: fix armv6* build

Remove dependency on libvpx-devel for armv6* as it can't be cross compiled.

srcpkgs/qt5/template

@@ -19,7 +19,7 @@ makedepends="
  fontconfig-devel libXi-devel libXv-devel libXinerama-devel libXrandr-devel
  libXcursor-devel libXScrnSaver-devel dbus-devel glib-devel icu-devel
  cups-devel libjpeg-turbo-devel sqlite-devel alsa-lib-devel tiff-devel
- libmng-devel libsrtp-devel libvpx-devel snappy-devel minizip-devel
+ libmng-devel libsrtp-devel snappy-devel minizip-devel
  libxshmfence-devel libSM-devel xcb-util-keysyms-devel
  xcb-util-image-devel xcb-util-renderutil-devel xcb-util-wm-devel
  libXcomposite-devel libwebp-devel libxkbcommon-devel harfbuzz-devel gtk+-devel
@@ -37,6 +37,11 @@ CXXFLAGS="-DOPENSSL_NO_SSL3_METHOD"
 # Required for musl libc
 LDFLAGS="-pthread"
 
+case "$XBPS_TARGET_MACHINE" in
+	armv[5-6]*) ;; # Can't cross compile libvpx
+	*) makedepends+=" libvpx-devel"
+esac
+
 if [ -n "$CROSS_BUILD" ]; then
 	# Need some devel packages in the host to build qmake, moc, uic, rcc
 	# wayland-devel contains /usr/bin/wayland-scanner